Radius Constants of Sigmoid Starlike Functions
Abstract
In the present investigation, we study the class of Sigmoid starlike functions, given by S*SG=\f∈A: zf'(z)/f(z) 2/(1+e-z)\ in context of estimating the sharp radius constants associated with several known subclasses of starlike functions. Further, graphical validation for the sharpness of results is also provided.
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